Intermediate pick-up roll for inking mechanism



Ian. ;12, 1932.

H. A. w. WOOD 1,840,343

INTERMEDIATE PICK-UP ROLL FOR INKING MECHANISM Original Filed May 16, 1929 Patented Jan. 12, 1932 UNITED STATES PATENT OFFICE HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR TO WOOD NEWSPAPER MA- CHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA INTERMEDIATE PICK-UP ROLL FOR IN KING MECHANISM Application filed May 16, 1929, Serial This invention relates to an inking mechanism. The principal objects thereof are to provide means for drawing ink from the fountain roll to the ink drum in a plurality of steps and to provide for acceleration of the speed of the ink in a step-by-step manner so as to draw out the ink film and make it thinnerthan would otherwise be the case.

Other objects and advantages of the invention will appear hereinafter. v

Reference is to be had to the accompanying drawings in which Fig. 1 is. a side view of an inking system constructed in accordance with this invention and shown in diagrammatic form;

Fig. 2 is a similar view on enlarged scale showing the course of the film of ink;

Fig. 3 is a view similar to Fig. 1 showing one method of gearing that can be employed for producing the desired results, and

Fig. 1 is a similar view showing a different form of gearing.

In this inking system the ink is started from rest in the fountain and brought up -to paper speed at some further point along in the system by a step-by-step method. I have shown only two steps in the drawings.

As usual, the'fountain 10 is provided with a fountain roll 11 and the film of ink thereon is regulated by the usual fountain blade 12.

Instead of ink being transferred directly from the fountain roll to the pick-up roll 13, an intermediate roll 1 1 is introduced. This roll is located slightly out of contactwith both the rolls 11 and 13 and picks up the ink by surface contact with the layer of ink on th? fountain roll 11.

' The surface speed of the intermediate r01 The degree in thickness of ink is proportional naturally to the difference in the surface speed of the two adjacent rolls. In the pres- No. 363,574. Renewed. June 17, 1931.

ent form the pick-up roll is run at paper speed.

The introduction of two or more steps in the acceleration of the ink not only reduces the speed differential between the adjacent rolls but reduces the film of the ink coming in contact with high speed surfaces. This latter is an important feature because it tends to prevent ink spray.

In Fig. 3 I have shown a system'of gearing by which a gear 15 on the shaft of the plate cylinder 16 rotates the ink drum 19 through a gear 17 and a gear 18 on the ink drum shaft. On the shaft of the ink drum is another gear which drives a gear on the shaft of the pickup roll 13. On this shaft is another gear 20 driving the intermediate roll 14 through a gear 21 and a gear 22 on the shaft of the latter. On the same shaft is a gear 23 meshing with a gear 24 which, through gears 25 and 26, drives the fountain roll 11. By this system of gearing the changes in speed above mentioned are easily provided for.

The same results, however, can be secured as shown in Fig. 1, by providing a shaft 30 driven by ti a press and through spiral or other gears 31 driving the fountain roll which in turn by gears 32 and 33 drives the intermediate roll 14. In this case the pick-up roll 13 is driven from the press preferably in the manner described in connection with Fig. 3.

In either case it will be seen that the speeds of the three rolls 11, 13 and 14 can be so proroll, of means for transferring ink from the former to the latter, and out of contact with each, at a plurality of different rates of speed v progressively greater all the way from one v .tem.

to the other.

' 2. In an inkingmechanism, the combination with a fountain roll and a pick-up roll, of means for-transferring ink from the former to the latter and out of contact with each, in a series of steps in which the film of ink is supplied from one elementto the next in a thinner condition.

3. In an inking mechanism, the combinationwith a series of inking rolls for transferring the ink from the first of the series to the last, and out of contact with each, of means for rotating said rolls at different speeds progressively higher from the source of supply to a point further along in the-sys- 4. In an inking device, the combination with a fountain roll and another inking roll, of an intermediate roll located in position to take'ink from the surface of the fountain roll and deposit it on the other roll and out of contact with each.

5. In an inking device, the combination with a fountain roll and a pick-up roll, of an intermediate roll located in position to take ink from the surface of the fountain roll and deposit it on the pick-up roll and means for driving said three rolls at such speed that the intermediate roll has a surface speed higher than that of the fountain roll and lower than that of the pick-up roll, forthe purpose described.

6. In an inking mechanism, the combination with a fountain roll and another inking roll, of an intermediate roll, the rolls being slightly out of contact, of means for driving the several rolls at a plurality of different rates of speed progressively greater from one to the other.

In testimony whereof I have hereunto affixed my signature.

a H. A. WISE WOOD. 

